The compound formed between 14X and 16Y is _______?
- A. XY
- B. XY2
- C. X2Y
- D. X4Y6
The Van der waals’ forces are dominant intermolecular forces in_______?
- A. Ammonium chloride
- B. Chlorine
- C. Sodium chloride
- D. Water
How many orbits are contained in an atom with atomic number 13?
- A. 7
- B. 6
- C. 5
- D. 3
The negatively charged particle in an atom is the
- A. Electron
- B. Neutron
- C. Positron
- D. Proton
The alkanol obtained from the production of soap is
- A. Dihydric Alkanol
- B. Tertiary Alkanol
- C. Trihydric Alkanol
- D. Monohydric Alkanol
Which of the following metals is common to both brass and bronze?
- A. Aluminium
- B. Copper
- C. Lead
- D. Iron
A consequences of global warming is
- A. Air pollution
- B. Flooding
- C. Increased humidity
- D. Water pollution
Which of the following sources of energy contributes to green-house effect?
- A. Natural gas
- B. Nuclear
- C. Wind
- D. Solar
Consider the following reaction equation
C2H4(g) + 3O2(g) \(\to\) 2CO2(g) + 2H2O(l).
The volume of oxygen at s.t.p that will be required to burn 14g of ethene is
[C2H4 = 28; Molar volume of gas at s.t.p = 22.4dm3
- A. 64.2dm3
- B. 33.6dm3
- C. 11.2dm3
- D. 3.73dm3
Which of the following compounds is/are secondary alkanols?
i) CH3CH(CH3)CH3OH
ii) CH3CH2CH(OH)CH3
iii) CH3C(OH)(CH3)CH3
- A. I only
- B. II only
- C. I and III only
- D. II and III only
The compound that makes palm wine taste sour after exposure to the air for few days is
- A. Ethanol
- B. Ethanoic acid
- C. Methanol
- D. Methanoic acid
Ripening of fruits is hastened by using
- A. Ethanol
- B. Ethane
- C. Ethene
- D. Ethyne
When a compound X is heated with concentrated tetraoxosulphate(VI)acid, it produces an alkene. X is an
- A. Alkane
- B. Alkanol
- C. Alkanoate
- D. Alkyne
Amino acids are obtained from proteins by
- A. Hydrolysis
- B. Oxidation
- C. Polymerization
- D. Reduction
Consider the following half-cell reactions.
Al(s) \(\to\) Al3+(aq) + 3e–
Cu2+(aq) + 2e– \(\to\) Cu(s)
The overall equation for the reaction is
- A. Al(s) + Cu2+(aq) \(\to\) Al3+(aq) + Cu(s)
- B. 2Al(s) + Cu2+(aq) \(\to\) 2Al(aq) + Cu(s)
- C. 2Al(s) + 3Cu2+(aq) \(\to\) 3Cu(s) + 2Al3+(aq)
- D. 3Al(s) + 2Cu2+(aq) \(\to\) Cu(s) + 3Al3+(aq)
Consider the following ionic equation:
Cr2O72- + 14H+ + ne– \(\to\) 2Cr3+ + 7H2O.
The value of n in the equation is_______?
- A. 7
- B. 6
- C. 3
- D. 2
The oxidation number of sulphur is +4 in
- A. Na2S>2O3
- B. H2SO3
- C. H2SO4
- D. SO3
Which of the following substances is a non-electrolyte?
- A. H2SO4
- B. CH3COOH
- C. C6H12O6
- D. NH4Cl
Chlorine water is used as a bleaching agent because it is
- A. An acidic solution
- B. An alkaline solution
- C. An oxidizing agent
- D. A reducing agent
The quality of electricity required to discharge 1 mole of univalent ion is
- A. 9600C
- B. 48250C
- C. 96500C
- D. 193000C
A compound with molecular formula CH2O2 is
- A. A Carbohydrate
- B. A Carboxylic acid
- C. An alkanol
- D. An ester